Intelligent desulfurization and dust removal equipment and method based on carbon production

Abstract

The application discloses a kind of intelligent desulfurization dust removal equipment and method based on carbon production, and the application relates to the technical field of desulfurization tower.The intelligent desulfurization dust removal equipment and method based on carbon production, including tower body and the first-stage mist eliminator and spraying device installed in it from top to bottom in sequence, by installing two-stage mist eliminator in tower body, the waste gas rising first passes through the spraying device and is sprayed to carry out desulfurization dust removal, then passes through the first-stage mist eliminator and carries out conventional demisting, using the power of water discharged to drive component, and then generate rotation force to water jet pipe and cleaning brush, so that the cleaning brush structure washes while flushing, compared with the traditional direct flushing mode, can better remove the impurities accumulated on the demisting baffle, maintain its surface to form water film ability, and then maintain good demisting effect, also will not cause blockage due to long-term residual, and does not additionally install driving element, reduce failure rate and maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of desulfurization tower technology, specifically to an intelligent desulfurization and dust removal equipment and method based on carbon production. Background Technology

[0002] Carbon is a non-metallic solid material primarily composed of carbon, mainly including two categories: charcoal and graphite. It encompasses a variety of products such as graphite electrodes, carbon blocks, graphite anodes, carbon fibers, and special graphites, and is widely used in steelmaking, aluminum electrolysis, chemical industry, nuclear energy, and aerospace. Its core production processes include raw material calcination, batching and mixing, molding, roasting, graphitization, and machining. The calcination process generates a large amount of dust-laden flue gas, with particulate matter and sulfur dioxide as the main pollutants, along with harmful components such as tar particles and hydrocarbons. SO2 is a major cause of acid rain, while flue gas seriously harms the atmospheric environment and human health. Carbon enterprises must efficiently treat calcination flue gas. Desulfurization and dust removal towers have become key environmental protection equipment in carbon production lines against this backdrop. Through the synergistic effect of liquid-phase absorption and dust removal, they can achieve a dust removal efficiency of ≥98% and a desulfurization rate of ≥95%, ensuring that emission concentrations meet national ultra-low emission standards. They are an indispensable core facility for the carbon industry to achieve green and compliant production.

[0003] In existing desulfurization towers, the desulfurization and dust removal of waste gas are generally achieved by first using atomized lime slurry spray. Before the purified waste gas is discharged, a demister is needed to remove mist and reduce the water vapor content in the waste gas. Conventional demisters are baffle plate demisters, and water spray pipes are also installed above and below the demister to periodically spray water for rinsing and removing impurities attached to the baffle plate. For example, a desulfurization tower demister device disclosed in CN207102120U includes a demister chamber and a demister device located in the demister chamber. The demister device includes a demister and a demister cleaning device. The demister cleaning device includes a water tank and a flushing water pump connected in sequence, as well as a flushing water main pipe connected to the demister chamber. The flushing water main pipe is horizontally provided with at least three layers of flushing water branch pipe assemblies in the demister chamber. The flushing water branch pipe assembly includes at least three flushing water branch pipes, each flushing water branch pipe is provided with at least three cleaning nozzles, and each flushing water branch pipe is provided with an electromagnetic control valve, which is electrically connected to a controller. This invention provides a good cleaning effect on demisters. Different electromagnetic control valves can be opened and closed individually to selectively clean the demister locally, which can effectively save flushing water and energy. Moreover, the cleaned demister is less prone to clogging, resulting in lower maintenance costs in the later stages.

[0004] However, simply rinsing with water may not be enough to thoroughly remove impurities, especially with multi-bend baffles that leave areas that the water cannot reach directly. Even with evenly distributed nozzles, it is impossible to guarantee consistent rinsing force at every location. As impurities accumulate, they can affect the formation of the water film, which in turn affects the demisting effect. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent desulfurization and dust removal equipment and method based on carbon production, which solves the problems existing in the current desulfurization tower demisting methods.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent desulfurization and dust removal device based on carbon production, comprising a tower body and a primary demister and a spraying device installed sequentially from top to bottom within it. An air inlet pipe is fixedly connected to the lower side of the tower body, and a stirring device is installed at the bottom of the tower body to stir the lime slurry at the bottom of the inner cavity. A tower top is fixedly connected to the top of the tower body, and a secondary demister is installed at the center of the top of the tower top. The secondary demister is used to absorb residual moisture in the exhaust gas and centrifuge it out. The primary demister includes: The demisting baffle consists of several layers coaxially distributed from the inside to the outside; The support rods are arranged in a circumferential array and penetrate several layers of demisting baffles. The outer ends of the support rods are fixed to the inner wall of the tower, and the inner ends are connected together by a connecting cylinder. The drive assembly is rotatably positioned at the center of the demister baffle. A water spray pipe is fixedly connected inside the drive assembly and communicates with the inside of the drive assembly. Two water spray pipes are provided parallel to each other on the upper and lower sides of the demisting baffle. Water spray holes are opened at the bottom of the two parts of the water spray pipe on both sides of the drive assembly. First rollers are rotatably sleeved at both ends of the water spray pipe, and a support ring for supporting the first rollers is fixedly connected to the inner wall of the tower body. The cleaning brush is fitted onto two water spray pipes on the same side, and the cleaning brush is located between the demisting baffles; The drive assembly is used to introduce clean water to rinse the defogging baffle and to use the power of the water to drive the water spray pipe and cleaning brush to rotate.

[0007] Preferably, the spray holes are located at the bottom of the spray pipe, biased to one side, and the spray holes in the two parts of the spray pipe are deflected in opposite directions, so that the horizontal component of the reaction force received by the spray pipe when spraying water is consistent with the direction of rotation of the water purification drive component.

[0008] Preferably, the driving component includes: A rotating cylinder, wherein an annular concave portion is provided in the middle of the rotating cylinder, and a connecting cylinder is rotatably sleeved on the annular concave portion; The impeller cylinder is rotatably sleeved on the outside of the top of the rotating cylinder, and the top of the impeller cylinder is sealed and fixedly connected to the cylinder cover by bolts; An impeller is rotatably connected to the center of an impeller cylinder. The impeller consists of a central cylinder and blades fixed on the outside. A groove with a diameter larger than the outer diameter of the cylinder is opened at the center of the bottom of the cylinder cover. A turntable is fixedly connected to the top of a rotating cylinder, and a through hole is provided in the center of the turntable to connect the rotating cylinder and the cylinder. A slot for inserting an impeller is also provided on the top of the turntable. The water inlet pipe is tangentially connected to the side of the impeller cylinder, which is used to allow clean water to enter the impeller cylinder tangentially and drive the impeller.

[0009] Preferably, the secondary demisting device includes: A support ring is placed at the top of the tower, and a drainage hole is provided on the bottom inner side of the support ring; A rotating ring is rotatably positioned above a support ring, and second rollers are rotatably connected to all four sides of the rotating ring; The cotton pad is fixedly attached to the bottom of the rotating ring; The fan blades are fixedly connected inside the rotating ring and use the rising exhaust gas to drive the rotating ring and the cotton pad to rotate.

[0010] Preferably, the cotton sheet has a lightweight, porous fibrous structure, with a top mesh and a bottom mesh respectively attached to the upper and lower surfaces of the cotton sheet, and a fixing ring attached to the bottom of the bottom mesh. The top mesh, cotton sheet, bottom mesh, and fixing ring are integrally fixed to the bottom of the rotating ring by bolts.

[0011] Preferably, the top of the tower is fixedly connected to a wind duct that is sleeved outside the secondary demisting device, and an air outlet hood is fixedly sleeved outside the wind duct. An air outlet pipe is connected to one side of the air outlet hood, and a through hole with a diameter smaller than the outer diameter of the support ring is opened at the top of the tower.

[0012] Preferably, a water pump is installed on the ground on one side of the tower body, the input end of the water pump is connected to a water pumping pipe that runs through the tower body, the output end of the water pump is connected to a spraying device, a water supply pipe runs through the top of the side of the tower body, one end of the water supply pipe is connected to a water inlet pipe, and the other end of the water supply pipe is connected to a high-pressure water supply unit that provides clean water.

[0013] Preferably, the spraying device includes: The main water supply pipe is connected at its bottom to the output end of the water pump. There are at least two water-filling branch pipes, which are connected to the top of the main water-filling pipe through a connector. The top of the water-filling branch pipe is horizontal, and the tops of the multi-layer water-filling branch pipes are at different heights. Several spray pipes are connected to the side of the horizontal section of the water-filling branch pipe, and the spray pipes penetrate the interior of the tower body. Spray holes are opened at the bottom of the spray pipes and inside the tower body. The spray pipes of different layers are arranged at staggered angles. The fixing ring is fixedly connected to the inner wall of the tower body and is used to fix the spray pipe.

[0014] This invention also discloses a method for using an intelligent desulfurization and dust removal device based on carbon production, comprising the following steps: Step 1: The exhaust gas from carbon production is cooled and then discharged into the tower body through the air inlet pipe; Step 2: Extract lime slurry and spray it downwards through a spraying device. The falling droplets move relative to and come into contact with the rising exhaust gas, so that the lime slurry desulfurizes and removes dust from the exhaust gas. After the droplets fall, they are stirred by a stirring device and recycled. Step 3: The purified humid exhaust gas continues to rise and passes through the demisting baffle of the first-stage demisting device. The water mist in the gas condenses and partially adheres to the demisting baffle, thereby reducing the moisture content of the exhaust gas. Clean water is periodically added to the drive component, which drives the drive component and rotates the water spray pipe and cleaning brush. At the same time, water is sprayed downward through the water spray pipe to scrub the demisting baffle and remove impurities from its surface. Step 4: The exhaust gas continues to rise and passes through the secondary demister, where moisture is absorbed again. This process also drives the secondary demister to operate, using centrifugal force to gradually remove the internal moisture. Finally, the exhaust gas is discharged from the top.

[0015] Preferably, if there are multiple sets of desulfurization and dust removal equipment, a lime slurry pool is set up externally to store lime slurry and supply it to the multiple sets of desulfurization and dust removal equipment for extraction and spraying. The mixing device is installed at the edge of the lime slurry pool.

[0016] This invention provides an intelligent desulfurization and dust removal device and method based on carbon production. Compared with the prior art, it has the following advantages: 1. This desulfurization and dust removal tower uses a two-stage demister system installed inside the tower. The rising exhaust gas first passes through a spray system for desulfurization and dust removal, and then passes through a first-stage demister for conventional demisting. The traditional straight-plate parallel baffles are transformed into concentric rings, which better match the cylindrical tower shape. The concentric ring design allows for the addition of a cleaning structure consisting of a drive assembly, water spray pipes, and cleaning brushes. The water spray pipes are also modified from the traditional fixed and evenly distributed type to two rotating rows. The power of the discharged water drives the drive assembly, which in turn generates rotational force on the water spray pipes and cleaning brushes. This allows the cleaning structure to simultaneously rinse and scrub, which, compared to the traditional direct rinsing method, can better remove impurities accumulated on the demister baffles, maintain their ability to form a water film on the surface, and thus maintain a good demisting effect. It also prevents clogging caused by long-term residue and does not require additional drive components, reducing the failure rate and maintenance costs.

[0017] 2. In addition to being driven by the drive component, the cleaning structure also benefits from the reaction force generated by the water spraying from the bottom of the spray pipe due to the tilt of the spray direction. This creates a dual driving force from both above and below, ensuring that the cleaning structure can overcome resistance and rotate smoothly. The specific driving force can be adjusted by controlling the pressure of the discharged water.

[0018] 3. This secondary demisting device uses a fibrous cotton sheet to provide sufficient space for contact with the exhaust gas, which can thoroughly capture the water mist inside. The porous structure ensures good drainage. The top fan blades rotate as the exhaust gas blows upwards, which in turn drives the cotton sheet to rotate. This causes the water inside to gradually move outwards under centrifugal force until too much water accumulates on the outside and is then thrown out. The thrown-out water flows back into the slurry below. The centrifugal separation method results in a lower moisture content in the center of the cotton sheet, which can continuously adsorb water mist in the exhaust gas and minimize the moisture content of the discharged exhaust gas. Furthermore, this mechanism does not require an additional electric drive, making it energy-efficient and environmentally friendly. Attached Figure Description

[0019] Figure 1 This is a left-side perspective view of the present invention; Figure 2 This is a right-side perspective view of the present invention; Figure 3 This is a schematic diagram of the installation of the primary demisting device of the present invention; Figure 4 This is a cross-sectional view of the primary demisting device of the present invention; Figure 5 For the present invention Figure 4 A partial exploded view; Figure 6 This is a schematic diagram of the cleaning brush, water spray pipe, and first roller of the present invention; Figure 7 This is an exploded view of the driving component of the present invention; Figure 8 This is a cross-sectional view of the cap of the present invention; Figure 9 This is a schematic diagram of the installation of the two-stage demisting device of the present invention; Figure 10 This is an exploded view of the two-stage demisting device of the present invention; Figure 11 This is a cross-sectional view of the support ring, rotating ring, and cotton pad of the present invention; Figure 12 For the present invention Figure 10 A magnified view of a section at point A in the middle; Figure 13 This is a schematic diagram of the installation of the spray device of the present invention.

[0020] In the diagram: 1. Tower body; 2. Air inlet pipe; 3. Tower top; 4. Primary demister; 41. Demisting baffle; 42. Connecting cylinder; 43. Support rod; 44. Cleaning brush; 441. Metal sheet; 442. Brush cotton; 45. Water spray pipe; 46. Drive assembly; 461. Rotary cylinder; 462. Impeller cylinder; 463. Cylinder cover; 4631. Groove; 464. Turntable; 465. Sealing ring; 466. Impeller; 467. Water inlet pipe head; 47. Fixing frame; 48. First roller; 5. Secondary demister; 51. Support ring; 52. Rotating ring; 53. Fan blade; 54. Netting plate; 55. Cotton pad; 56. Lower netting plate; 57. Fixing ring; 58. Second roller; 6. Spraying device; 61. Main water filling pipe; 62. Branch water filling pipe; 63. Spraying pipe; 64. Fixing ring; 7. Water pump; 8. Pumping pipe; 9. Water supply pipe; 10. Stirring device; 11. Air duct; 12. Air outlet hood; 13. Air outlet pipe. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] See Figures 1-13 This invention discloses an intelligent desulfurization and dust removal equipment and method based on carbon production, and provides the following three technical solutions: The first embodiment includes a tower body 1 and a primary demister 4 and a spraying device 6 installed sequentially from top to bottom inside the tower body 1. An air inlet pipe 2 is fixedly connected to the lower side of the tower body 1, and a stirring device 10 is installed at the bottom of the tower body 1 to stir the lime slurry at the bottom of the inner cavity. A tower top 3 is fixedly connected to the top of the tower body 1, and a secondary demister 5 is installed at the center of the top of the tower top 3. The secondary demister 5 is used to absorb residual moisture in the exhaust gas and centrifuge it out. The primary demister 4 includes: The demisting baffle 41 is composed of several layers coaxially distributed from the inside to the outside; The support rod 43 has multiple rods arranged in a circumferential array and passes through several layers of demisting baffles. The outer end of the support rod 43 is fixed to the inner wall of the tower, and the inner end is connected to the support rod 43 through the connecting cylinder 42. The drive assembly 46 is rotatably positioned at the center of the demisting baffle 41; A water spray pipe 45 is fixedly connected inside the drive assembly 46 and communicates with the inside of the drive assembly 46. Two water spray pipes 45 are provided parallel to each other on the upper and lower sides of the demisting baffle plate 41. Water spray holes are opened at the bottom of the two parts of the water spray pipe 45 on both sides of the drive assembly 46. First rollers 48 are rotatably sleeved at both ends of the water spray pipe 45, and a support ring for supporting the first rollers 48 is fixedly connected to the inner wall of the tower body 1. A cleaning brush 44 is fitted onto two water spray pipes 45 on the same side, and the cleaning brush 44 is located between the demisting baffles 41. The drive assembly 46 is used to introduce clean water to rinse the demisting baffle 41 and to drive the water spray pipe 45 and cleaning brush 44 to rotate using the power of the water.

[0023] The top of the tower top 3 is fixedly connected to a wind duct 11 that is sleeved on the outside of the secondary demisting device 5, and an air outlet hood 12 is fixedly sleeved on the outside of the wind duct 11. An air outlet pipe 13 is connected to one side of the air outlet hood 12. A through hole with a diameter smaller than the outer diameter of the support ring 51 is opened on the top of the tower top 3.

[0024] A water pump 7 is installed on the ground on one side of the tower body 1. The input end of the water pump 7 is connected to a water pumping pipe 8 that runs through the tower body 1. The output end of the water pump 7 is connected to a spraying device 6. A water supply pipe 9 runs through the top side of the tower body 1. One end of the water supply pipe 9 is connected to a water inlet pipe head 467. The other end of the water supply pipe 9 is connected to a high-pressure water supply unit that provides clean water.

[0025] The spray device 6 includes: The bottom end of the water filling pipe 61 is connected to the output end of the water pump 7; There are at least two water-filling branch pipes 62, which are connected to the top of the main water-filling pipe 61 through a connector. The top of the water-filling branch pipe 62 is horizontal, and the tops of the multi-layer water-filling branch pipes 62 are at different heights. Several spray pipes 63 are connected to the side of the horizontal section of the water filling branch pipe 62, and the spray pipes 63 penetrate the interior of the tower body 1. Spray holes are opened at the bottom of the spray pipes 63 and inside the tower body 1. The spray pipes 63 of different layers are arranged at staggered angles. The fixing ring 64 is fixedly connected to the inner wall of the tower body 1 and is used to fix the spray pipe 63.

[0026] By installing upper and lower two-stage demisters inside the tower body 1, the rising exhaust gas first passes through the spray device 6 for desulfurization and dust removal, and then passes through the first-stage demister 4 for conventional demister removal. The traditional straight-plate parallel baffles are transformed into concentric rings, which better match the shape of the cylindrical tower body 1. After the design is made into a concentric ring, a cleaning structure consisting of a drive component 46, a water spray pipe 45, and a cleaning brush 44 can be added. The water spray pipe 45 is also transformed from the traditional fixed and evenly distributed form into two rows that can rotate. The power of the discharged water drives the drive component 46, which in turn generates rotational power on the water spray pipe 45 and the cleaning brush 44, so that the cleaning structure washes while being rinsed with water. Compared with the traditional direct rinsing method, it can better remove the impurities accumulated on the demister baffle 41, maintain its ability to form a water film on its surface, and thus maintain a good demister effect. It will not cause blockage due to long-term residue, and no additional drive components are needed, which reduces the failure rate and maintenance costs.

[0027] The second implementation differs from the first implementation in that the water spray hole is located at the bottom of the water spray pipe 45 and is biased to one side, and the water spray holes in the two parts of the water spray pipe 45 are biased in opposite directions, so that the horizontal component of the reaction force received by the water spray pipe 45 when spraying water is consistent with the direction of rotation of the water purification drive component 46.

[0028] In addition to being driven by the drive assembly 46, the cleaning structure is also driven by the reaction force generated when water is sprayed from the bottom of the spray pipe 45 due to the tilt of the spray direction. This creates a dual driving force from both above and below, ensuring that the cleaning structure can overcome resistance and rotate smoothly. The specific driving force can be adjusted by controlling the pressure of the discharged water.

[0029] In this embodiment, the driving component 46 includes: Rotating cylinder 461, with an annular concave center, and connecting cylinder 42 rotatably sleeved on the annular concave center; Impeller cylinder 462 is rotatably sleeved on the outside of the top end of rotating cylinder 461, and the top of impeller cylinder 462 is fixedly connected to cylinder cover 463 by bolts, and a sealing structure is provided between cylinder cover 463 and impeller cylinder 462. Impeller 466 is rotatably connected to the center of impeller cylinder 462. Impeller 466 is composed of a central cylinder and blades fixed on the outside. The bottom center of cylinder cover 463 has a groove 4631 with a diameter larger than the outer diameter of the cylinder. After the water flow impacts and drives the impeller 466 to rotate, it will eventually enter the rotating cylinder 461 through the gap between the top groove 4631 and the cylinder. Turntable 464 is fixedly connected to the top of rotating cylinder 461, and a through hole is opened in the center of turntable 464 to connect rotating cylinder 461 and cylinder. A slot for inserting impeller 466 is also opened on the top of turntable 464, so that multiple blades of impeller 466 apply force to turntable 464 simultaneously, and impeller 466 is easy to disassemble. The water inlet pipe head 467 is tangentially connected to the side of the impeller cylinder 462, which is used to allow clean water to enter the impeller cylinder 462 tangentially and push the impeller 466, thereby driving the rotating cylinder 461 and the spray pipe 45 installed on it to rotate together.

[0030] The main difference between the third and first implementation methods is that the secondary demisting device 5 includes: A support ring 51 is placed on top of the tower top 3, and a drainage hole is provided on the bottom inner side of the support ring 51. A rotating ring 52 is rotatably positioned above the support ring 51, and second rollers 58 are rotatably connected around the circumference of the rotating ring 52. Cotton pad 55 is fixedly connected to the bottom of rotating ring 52; The fan blade 53 is fixedly connected inside the rotating ring 52 and uses the rising exhaust gas to drive the rotating ring 52 and the cotton pad 55 to rotate.

[0031] The cotton pad 55 has a lightweight, porous, fibrous structure. The upper and lower surfaces of the cotton pad 55 are respectively attached to the upper and lower mesh sheets 54 and 56, and the bottom of the lower mesh sheet 56 is attached to the fixing ring 57. The upper mesh sheet 54, cotton pad 55, lower mesh sheet 56 and fixing ring 57 are fixed to the bottom of the rotating ring 52 by bolts. The upper mesh sheet 54 and lower mesh sheet 56 cooperate to clamp the cotton pad 55 in the middle, which plays a supporting role and increases resistance, preventing it from collapsing or shifting.

[0032] The secondary demisting device 5 uses a fibrous cotton sheet 55 to provide sufficient space for contact with the exhaust gas, which can thoroughly capture the water mist inside. The porous design ensures good drainage. The top fan blade 53 rotates as the exhaust gas blows upward, which in turn drives the cotton sheet 55 to rotate. This causes the water inside to gradually move outward under centrifugal force until it accumulates too much on the outside and is then thrown out. The thrown-out water flows back into the slurry below. The centrifugal separation method results in a low water content in the center of the cotton sheet 55, which can continuously adsorb water mist in the exhaust gas and minimize the water content of the discharged exhaust gas. Furthermore, this mechanism does not require an additional electric drive structure, making it more energy-efficient and environmentally friendly.

[0033] This invention also discloses a method for using an intelligent desulfurization and dust removal device based on carbon production, comprising the following steps: Step 1: The exhaust gas from carbon production is cooled and discharged into tower body 1 through air inlet pipe 2; Step 2: Water pump 7 draws lime slurry through water pumping pipe 8 and discharges it through water filling main pipe 61 to water filling branch pipe 62, and then disperses it into spray pipe 63. It is then sprayed downward through bottom spray holes. The falling droplets move relative to and contact the rising exhaust gas, so that the lime slurry desulfurizes and removes dust from the exhaust gas. After the droplets fall, they are stirred by stirring device 10 to prevent sedimentation, so that they can be recycled. Step 3: The purified humid exhaust gas continues to rise and passes through the demisting baffle 41 of the first-stage demisting device 4. The water mist in the gas condenses and partially adheres to the demisting baffle 41, thereby reducing the moisture content of the exhaust gas. Clean water is periodically added to the drive assembly 46. The impact of the clean water drives the impeller 466 to rotate, which in turn drives the turntable 464 and the rotating drum 461 to rotate, and drives the water spray pipe 45 and the cleaning brush 44 to rotate. At the same time, water is sprayed out obliquely downward through the water spray pipe 45. The reaction force promotes the rotation of the water spray pipe 45 and the cleaning brush 44, thereby scrubbing the demisting baffle 41 and removing impurities from the surface of the demisting baffle 41. Step 4: The exhaust gas continues to rise and is reabsorbed by the secondary demisting device 5. At the same time, it is driven to rotate by the fan blade 53, which in turn drives the cotton pad 55 to rotate through the rotating ring 52. The internal moisture is gradually thrown out by centrifugal force. Finally, the exhaust gas is discharged from the top air outlet 13.

[0034] If there are multiple sets of desulfurization and dust removal equipment, a lime slurry pool is set up externally to store lime slurry and supply it to the multiple sets of desulfurization and dust removal equipment for extraction and spraying. The mixing device 10 is installed at the edge of the lime slurry pool.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent desulfurization and dust removal device based on carbon production, comprising a tower body and a primary demister and a spraying device installed sequentially from top to bottom inside the tower body, wherein an air inlet pipe is fixedly connected to the lower side of the tower body, and a stirring device is installed at the bottom of the tower body for stirring the lime slurry at the bottom of the inner cavity, characterized in that: The top of the tower body is fixedly connected to a tower top, and a secondary demister is installed at the center of the top of the tower top. The secondary demister is used to absorb residual moisture in the exhaust gas and centrifuge it out. The primary demister includes: The demisting baffle consists of several layers coaxially distributed from the inside to the outside; The support rods are arranged in a circumferential array and penetrate several layers of demisting baffles. The outer ends of the support rods are fixed to the inner wall of the tower, and the inner ends are connected together by a connecting cylinder. The drive assembly is rotatably positioned at the center of the demister baffle. A water spray pipe is fixedly connected inside the drive assembly and communicates with the inside of the drive assembly. Two water spray pipes are provided parallel to each other on the upper and lower sides of the demisting baffle. Water spray holes are opened at the bottom of the two parts of the water spray pipe on both sides of the drive assembly. First rollers are rotatably sleeved at both ends of the water spray pipe, and a support ring for supporting the first rollers is fixedly connected to the inner wall of the tower body. The cleaning brush is fitted onto two water spray pipes on the same side, and the cleaning brush is located between the demisting baffles; The drive assembly is used to introduce clean water to rinse the demisting baffle plate and to drive the water spray pipe and cleaning brush to rotate using the power of the water. The secondary demisting device includes: A support ring is placed at the top of the tower, and a drainage hole is provided on the bottom inner side of the support ring; A rotating ring is rotatably positioned above a support ring, and second rollers are rotatably connected to all four sides of the rotating ring; The cotton pad is fixedly attached to the bottom of the rotating ring; The fan blades are fixedly connected inside the rotating ring and are driven by the rising exhaust gas to rotate the rotating ring and the cotton pad. The cotton sheet has a lightweight, porous, fibrous structure. A top mesh and a bottom mesh are attached to the upper and lower surfaces of the cotton sheet, respectively, and a fixing ring is attached to the bottom of the bottom mesh. The top mesh, cotton sheet, bottom mesh, and fixing ring are integrally fixed to the bottom of the rotating ring by bolts.

2. The intelligent desulfurization and dust removal equipment based on carbon production according to claim 1, characterized in that: The spray holes are located at the bottom of the spray pipe, offset to one side, and the spray holes in the two parts of the spray pipe are deflected in opposite directions, so that the horizontal component of the reaction force when the spray pipe sprays water is in the same direction as the direction of rotation of the water purification drive component.

3. The intelligent desulfurization and dust removal equipment based on carbon production according to claim 1, characterized in that: The driving component includes: A rotating cylinder, wherein an annular concave portion is provided in the middle of the rotating cylinder, and a connecting cylinder is rotatably sleeved on the annular concave portion; The impeller cylinder is rotatably sleeved on the outside of the top of the rotating cylinder, and the top of the impeller cylinder is sealed and fixedly connected to the cylinder cover by bolts; An impeller is rotatably connected to the center of an impeller cylinder. The impeller consists of a central cylinder and blades fixed on the outside. A groove with a diameter larger than the outer diameter of the cylinder is opened at the center of the bottom of the cylinder cover. A turntable is fixedly connected to the top of a rotating cylinder, and a through hole is provided in the center of the turntable to connect the rotating cylinder and the cylindrical cylinder. A slot for inserting an impeller is also provided on the top of the turntable. The water inlet pipe is tangentially connected to the side of the impeller cylinder, which is used to allow clean water to enter the impeller cylinder tangentially and drive the impeller.

4. The intelligent desulfurization and dust removal equipment based on carbon production according to claim 1, characterized in that: The top of the tower is fixedly connected to a wind duct that is sleeved outside the secondary demisting device, and an air outlet hood is fixedly sleeved outside the wind duct. An air outlet pipe is connected to one side of the air outlet hood. A through hole with a diameter smaller than the outer diameter of the support ring is opened at the top of the tower.

5. The intelligent desulfurization and dust removal equipment based on carbon production according to claim 3, characterized in that: A water pump is installed on the ground on one side of the tower. The input end of the water pump is connected to a water pumping pipe that runs through the tower. The output end of the water pump is connected to a spraying device. A water supply pipe runs through the top side of the tower. One end of the water supply pipe is connected to a water inlet pipe, and the other end of the water supply pipe is connected to a high-pressure water supply unit that provides clean water.

6. The intelligent desulfurization and dust removal equipment based on carbon production according to claim 1, characterized in that: The spraying device includes: The main water supply pipe is connected at its bottom to the output end of the water pump. There are at least two water-filling branch pipes, which are connected to the top of the main water-filling pipe through a connector. The top of the water-filling branch pipe is horizontal, and the tops of the multi-layer water-filling branch pipes are at different heights. Several spray pipes are connected to the side of the horizontal section of the water-filling branch pipe, and the spray pipes penetrate the interior of the tower body. Spray holes are opened at the bottom of the spray pipes and inside the tower body. The spray pipes of different layers are arranged at staggered angles. The fixing ring is fixedly connected to the inner wall of the tower body and is used to fix the spray pipe.

7. A method of using an intelligent desulfurization and dust removal equipment based on carbon production according to any one of claims 1-6, characterized in that: Includes the following steps: Step 1: The exhaust gas from carbon production is cooled and then discharged into the tower body through the air inlet pipe; Step 2: Extract lime slurry and spray it downwards through a spraying device. The falling droplets move relative to and come into contact with the rising exhaust gas, so that the lime slurry desulfurizes and removes dust from the exhaust gas. After the droplets fall, they are stirred by a stirring device and recycled. Step 3: The purified humid exhaust gas continues to rise and passes through the demisting baffle of the first-stage demisting device. The water mist in the gas condenses and partially adheres to the demisting baffle, thereby reducing the moisture content of the exhaust gas. Clean water is periodically added to the drive component, which drives the drive component and rotates the water spray pipe and cleaning brush. At the same time, water is sprayed downward through the water spray pipe to scrub the demisting baffle and remove impurities from its surface. Step 4: The exhaust gas continues to rise and is reabsorbed by the secondary demister, which in turn drives the secondary demister to operate, using centrifugal force to gradually remove the internal moisture. Finally, the exhaust gas is discharged from the top.

8. The method of using an intelligent desulfurization and dust removal equipment based on carbon production according to claim 7, characterized in that: If there are multiple sets of desulfurization and dust removal equipment, a lime slurry pool should be set up externally to store lime slurry and supply it to the multiple sets of desulfurization and dust removal equipment for extraction and spraying. The mixing device should be installed at the edge of the lime slurry pool.

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